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| TPS54227 Datasheet, PDF (4/19 Pages) Texas Instruments – 4.5V to 18V Input, 2-A SYNCHRONOUS STEP DOWN SWIFT | |||
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TPS54227
SLVSAU2 â MAY 2011
ELECTRICAL CHARACTERISTICS (continued)
over operating free-air temperature range, VIN = 12 V (unless otherwise noted)
PARAMETER
TEST CONDITIONS
THERMAL SHUTDOWN
TSDN
Thermal shutdown threshold
Shutdown temperature (2)
Hysteresis (2)
ON-TIME TIMER CONTROL
tON
On time
tOFF(MIN) Minimum off time
SOFT START
VIN = 12 V, VO = 1.05 V
TA = 25°C, VFB = 0.7 V
ISSC
ISSD
UVLO
SS charge current
SS discharge current
VSS = 1V
VSS = 0.5 V
UVLO
UVLO threshold
Wake up VREG5 voltage
Hysteresis VREG5 voltage
(2) Not production tested.
www.ti.com
MIN TYP MAX UNIT
165
°C
35
150
ns
260 310 ns
1.4 2.0 2.6 μA
0.1 0.2
mA
3.45 3.75 4.05
V
0.13 0.32 0.48
4
Copyright © 2011, Texas Instruments Incorporated
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